Effect of Parameters of Semi-solid Stirring on Microstructure of A356-10%B4Cp Composites

被引：0
|
作者：
Zhang X. [1 ]
Bai J. [2 ]
Guan R. [2 ,3 ]
机构：
[1] School of Mechanical Engineering, Shenyang University, Shenyang
[2] School of Materials Science and Engineering, Northeastern University, Shenyang
[3] State Key Laboratory of Solidification Technology, Northwest Polytechnic University, Xi'an
来源：
Cailiao Daobao/Materials Reports | 2020年 / 34卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Aluminum matrix composites; Hot rolling; Microstructure; Particles reinforced;
D O I：
10.11896/cldb.18120077
中图分类号：
学科分类号：
摘要：
In this paper, a semi-solid stirring and hot rolling process was used to prepare A356-10%B4Cp composite sheet, the effects of semi-solid stirring parameters on the as-cast and hot-rolled microstructures of the A356-10%B4Cp composites were studied. It is found that, when the mi-xing temperature is 580℃, the mixing time is 15 min, stirring speed is within 800 r/min, the average diameter and roundness of α-Al grains decrease with the increase of stirring speed, and the distribution of B4C particles tends to be uniform. When the stirring speed exceeds 800 r/min, the average diameter and roundness of α-Al did not decrease, and the distribution of B4C particles tends to be nonuniform. When the mixing temperature is 580℃, stirring speed is 800 r/min, stirring time is within 5-35 min, the average diameter and roundness of α-Al decreased with the increase of stirring time, and the distribution of B4C particles was also uniform. The optimum technological parameters are as follows: stirring temperature is 580℃, stirring speed is 800 r/min, stirring time is 35 min. The A356-10%B4Cp composite plate with smooth surface can be obtained after hot rolling of the composite ingot prepared by the process. © 2020, Materials Review Magazine. All right reserved.
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页码：10103 / 10107
页数：4
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